Transparent liquid into the oil pan is the addition of water in USB, beer, juice, etc. The shell is transparent or translucent. It seems the whole crystal clear is a watch. As personal gifts

Transparent liquid into the oil USB Flash Drive

Transparent liquid into the oil pan is the addition of water in USB, beer, juice, etc. The shell is transparent or translucent. It seems the whole crystal clear is a watch. As personal gifts, business gifts and so on , ornamental value is higher than the practical value,the liquid USB belongs to the gift set.